Abstract: A method of making a sanitary drink is disclosed in which a certain type of fungi of basidiomycetes belonging to the family Polyporaceae and hydrangea tea are used as starting materials and extracted with water in an amount of several times to several tens times that of the mixture at a predetermined temperature. The resulting extract is rendered acidic by the use of an organic acid and allowed to stand at a low temperature, thereby permitting insoluble matter to precipitate. The insoluble matter is separated from the extract system and the resulting filtrate is thermally sterilized after charging into a suitable container.